be seated 表示状态,就坐,坐着,seat的词组除了be seated,seat oneself,还有seat sb.,remain seated等,seated有时是过去分词,有时又具有形容词的性质.
Please be seated,ladies and gentlemen.女士们先生们,请就坐.
She seated herself by the window.这个句子还可以说：
She was seated by the window.
Please remain seated.请不要站起来.
She seated the baby in the chair.